Greetings to all community members,I am Virendra,a mechanical engineer by profession and historian by passion from India.Firstly I am very glad to be part of this reverred community,which has been source of providing valuable Information regarding Numismatics.

I have been collecting some coins for a year or more.As a Beginner in Coin Collecting and have query that is - Can we segregate coins based on their metal type like (Nickel- Copper, Silver, Nickel-Steel, Nickel-Brass) for as of now and store it in separate propylene containers, while I await for my coin storage album which yet to be shipped.I asked this question on a suspicion of galvanic corrosion.

Welcome! The enemy of collections is that in nature everything goes from a higher state to a lower state over time. If you allow your coins to be handled that process will be accelerated by the acid in the oils on your fingers (always wear cotton gloves). Monitor your humidity. Too much humidity can speed up the oxidation process.

@Virendra, first welcome to CCF. Second, as long as the coins are being stored dry, you should not have to worry about galvanic corrosion from the touching of coins of different metal alloys. I'd rather worry about dings and gouges from the coins mechanically rubbing against each other.

"If you climb a good tree, you get a push."-----Ghanaian proverb

"The danger we all now face is distinguishing between what is authentic and what is performed."-----King Adz

Coins of different metals and alloys stored in bulk will not suffer from galvanic action if all of them, and their contained environment, is completely dry.The inclusion of silica gel in that contained environment would be helpful.

Screw top jars and snap lock polyethlene bags are good for bulk coin storage.

I have followed the rule if it's safe for food, it's more than likely safe to store coins in. Not so much holders and albums, but the storage bins, like tupperware or baggies, very important in the aid of keeping out humidity and moisture.

"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013! ANA Life Member #3288 in good standing since 1982, EAC Member #6202, NBS Member, 2¢ variety collector.

As a Mechanical Engineer you should be aware of the method of how a Thermocouple works. The basic principle is at the location of where two dissimilar metals touch, an electrical charge is created. Yes it is very small but pending on the type of metals, this charge can be destructive to one or both metals. Very slowly but it does happen. This charge is utilized in many industries with gauges to monitor such things as changes in temperatures since a change in temperatures effects the rate of electrical current. To sum it up, the chances of two metals in coins having an effect on their longevity due to touching is trivial but it does exist. For example a Copper coin and an Aluminum coin touching each other could start to show effects in a few hundred years.

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